I just uploaded the new TechLab, sorry about the delay. And thanks proofreaders :)

:arrow: TechLab: Layer 2 Switching Basics

As I mentioned upfront it's a short and simple one but I hope you'll find it useful nevertheless. I'm working on "VLAN Basics" TechLab that's quite a bit longer and contains both more theory and lab tasks. I hope to publish that one next week but don't be surprised if it takes a week longer.